Integrated Display Light Sensing Pixels for Biometric Pulse Wave Detection
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Solution Overview
Problem
Existing portable blood pressure measuring devices require separate light sources, sensors, and displays, making them inconvenient to carry alongside smartphones or tablets.
Innovation Solution
A display device capable of detecting pulse wave signals at multiple touch locations and selectively displaying the most accurate biometric information, including blood pressure, heart rate, and oxygen saturation, using integrated light sensing and display pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a portable blood pressure measuring device is used, then biometric information can be measured, but the device requires separate light source, sensor, and display making it inconvenient to carry
Solution Approach 1:
The patent combines the light source, sensor, and display functions into a single integrated display device. The display panel includes both display pixels and light sensing pixels that can detect pulse wave signals, while the processing circuit integrates the signal processing and biometric measurement functions, eliminating the need for separate portable blood pressure measuring devices
Solution Approach 2:
The display device is designed to perform multiple functions: displaying information, detecting pulse wave signals through light sensing pixels, and processing biometric data. This multi-functional design allows the single device to replace specialized portable blood pressure measuring devices, smartphones, and tablets
2Measurement precision
If pulse wave signals are detected at multiple touch locations, then biometric information accuracy is improved, but the system complexity increases
Solution Approach 1:
The display panel is divided into multiple functional regions with display pixels and light sensing pixels arranged in specific patterns. The processing circuit separately processes signals from different touch locations (first touch location and second touch location) to detect pulse wave signals, enabling multi-point measurement without requiring a completely separate system for each location
Solution Approach 2:
Different regions of the display panel have different functional properties - some regions contain display pixels while others contain light sensing pixels. This local differentiation allows the device to simultaneously display information and detect pulse wave signals at multiple specific locations, improving measurement precision without uniform system complexity throughout
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Improves biometric information detection accuracy and user convenience by integrating pulse wave signal detection and display into a single portable device, allowing for accurate measurement and display of various biometric parameters.
Implementation Method 1
light sensing pixels arranged in the display area... configured to drive the light sensing pixels to sense light
Implementation Method 2
display pixels arranged in a display area of a display panel... configured to drive the display pixels to emit light
Data Source
AI summary
A display device including: display pixels arranged in a display area of a display panel; light sensing pixels arranged in the display area; a display scan driver configured to drive the display pixels to emit light; a light sensing scan driver configured to drive the light sensing pixels to sense light; and a main driving circuit configured to measure a plurality of biometric information using light sensing signals received from touch positions of different body parts, wherein the main driving circuit displays an application program screen to guide a detection process of biometric signals with respect to the different body parts, and selects at least one biometric information among the plurality of biometric information that was measured by analyzing the biometric signals as a final measurement result according to a preset condition and displays the final measurement result on the application program screen.